For those unfamiliar, the Raspberry Pi is a credit card-sized computer that can mimic the abilities of a typical desktop setup, but is extremely affordable and is designed to foster home-brew projects.
Dubbed the “final evolution of the original Raspberry Pi,” the new B+ model of this microcomputer is now available for $35 with several refinements over previous iterations. It still packs 512MB of RAM and supports the same software, but it also includes several refinements that should help to improve its usability:
- More GPIO. The GPIO header has grown to 40 pins, while retaining the same pinout for the first 26 pins as the Model B.
- More USB. We now have 4 USB 2.0 ports, compared to 2 on the Model B, and better hotplug and overcurrent behaviour.
- Micro SD. The old friction-fit SD card socket has been replaced with a much nicer push-push micro SD version.
- Lower power consumption. By replacing linear regulators with switching ones we’ve reduced power consumption by between 0.5W and 1W.
- Better audio. The audio circuit incorporates a dedicated low-noise power supply.
- Neater form factor. We’ve aligned the USB connectors with the board edge, moved composite video onto the 3.5mm jack, and added four squarely-placed mounting holes.